Tank-car.



V. M. SUMMA.

TANK GAR. APPLIUATION TILED MAR. 31,1910. $59 81 K Patented May 31,1910.

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IINIIEE dIAIlEd PAINT QI I IQE,

VICTOR M. SUIVIMA, OF ST. LOUIS, MISSOURI. ASSIGNOR 'IO AMERICAN 7 CARAND FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEWJERSEY.

TANK-GAR.

Application filed March 31, 1910. Serial No. 552,509.

To all whom it may concern:

Be it known that I, VICTOR M. SUMMA, residing at St. Louis, Missouri,and being a citizen of the United States, have invented certain new anduseful Improvements in Tank-Cars, of which the following is a full,clear, and exact description, such as will enable others skilled in theart to which it appertains to make and to use the same, reference beinghad to the accompanying drawings, which illustrate the preferred form ofthe invention, though it is to be understood that the invention is notlimited to the exact details of construction shown and described, as itis obvious that various modifications thereof will occur to personsskilled in the art.

In said drawings: Figure 1 is a view, in side elevation, of atankembodying the features of the present invention, the head block beingillustrated in section. Fig. 2 is an end View of one of the extensionbrackets, the relative position of the tank being indicated in dottedlines.

In the present art difficulty has been ex perienced in preventing thesagging of the ends of the car frame, and at the same time it has beenfound necessary to provide center supports for the tank for taking upthe bending moment at the center. The present invention provides for adistribution of stresses for causing the center bending moment to offera counteracting force against the tendency of the ends of the car frameto sag.

In carrying out the invention I preferably provide head blocks 1, 1mounted on and fixed to the usual underframe 2, which latter is providedwith the usual cradles 3 forming the upper portions of bolsters 4.Mounted on the cradles 3 is the tank 5 which is retained in positionagainst lateral movement by the usual straps 6, 6.

Fixed to each end of and extending outwardly from tank 1 isa bracket 7which may be of various shapes but is essentially distinguished by theposition of the beveled or cam face 7, and each bracket extends into arecess 8 formed in the respective block 1, which recess is providedwith'its upper sursurface of bracket 7.

face beveled for forming a cam as indicated at 9, the beveled surface 9being engaged by the under-hanging portion of the beveled Thus anytendency toward longitudinal thrust of tank 5 due to shocks and buflingexerts lifting pressure on the blocks 1 thus tending to elevate andprevent sagging of the ends of the frame.

As graphically demonstrated in Fig. 1 of the drawing the perpendicularcomponent of the lateral stress transmitted to the blocks 1 is in directlines with the bolsters 4;. Obviously. the bending moment at the centerof the tank 5 tends to elevate the ends of the tank acting on thecradles 3 as fulcrums, which stress thus transmitted in turn serves tomaintain the ends of the frame against sagging.

What I claim is:

1. In a tank car, the combination with a frame and a tank mountedthereon of means connectedwith the ends of the tank, and under-hangingportions of the frame posi- Patented May 31, ieio.

tioned and adapted for transmitting lifting stresses to the end portionsof the frame as components of the bending moment of the central portionof the tank.

2. In a tank car, the combination with a frame having inclined beveledportions contiguous the ends, and a tank mounted on said frame, ofextensions projecting from the ends of the tank and under-hanging saidinclined portions in position for engaging the same.

3. In a tank car, the combination with a frame, and a tank mountedthereon, of extensions projecting from the ends of the tank and havinginclined surfaces underlying portions of the frame. I

I. In a tank car, the combination with a frame, and a tank mountedthereon, of a bracket extending from one,end of the tank longitudinallyof the frame, and having an inclined portion under-lying a portion ofthe frame contiguous to the end thereof.

5. In combination, a frame having bolsters with upstanding cradles, atank mounted in said cradles and having its ends extending beyond thecradles and its intermediate portions between the saddles inde pendentof the frame, and means at the ends 1 ping a portion of the respectivehead block, 10 of the tank under-lapping portions of the the lapportions having inclined meeting frame contiguous the ends thereof.surfaces.

. 6. In a tank car, the combination with a In Witness whereof, I havehereunto set ,1' frame having a head block contiguous each my hand inthe presence of two witnesse end thereof, and a tank mounted on theVICTOR M. SUMMA.

frame, of a bracket fixed to each end of the Witnesses: tank andextending outwardly therefrom OSCAR HOOHBERG, longitudinally of theframe and under-lap- CHARLOTTE Mrrzn.

